An In Situ Interfacial Assembly Approach to Synthesize a Functional Hierarchical Porous Carbon Nanoreactor with Surface-Confined Platinum.
basic_science · Level V
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- Record sourced from PubMed, PMID 41758983.
- Also identified by DOI 10.1021/acsnano.5c22265.
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Abstract
Porous carbon-confined metal nanoreactors have attracted considerable interest in the catalysis field due to the confinement effect, resulting in unique catalytic performance. Nevertheless, conventionally multiple steps and a hazardous acid such as HF are generally required for the synthesis of nanoreactors. Herein, we report a facile and innovative synthetic strategy for fabricating a hierarchical porous carbon sphere (HPCS) surface-confined platinum nanoreactor evolved from Pt<sub>SA</sub>@SiO<sub>2</sub> single-atom (SA) catalysts, during which the etching of the SiO<sub>2</sub> template by polytetrafluoroethylene and the formation of carbon are simultaneously achieved via in situ interfacial assembly without using a hazardous acid/base. Resultantly, the poorly active Pt<sub>SA</sub>@SiO<sub>2</sub> is transformed into high-efficiency Pt<sub>SA+NP</sub>@HPCS with surface-confined Pt species due to the continuous mass transport from the multiordered porosity and active metal-support interactions. The present synthetic strategy is facile and universal, which can also be applied to the direct synthesis of non-noble metal-carbon nanoreactors with surface-confined structure.